Order Management Case

Our client is a fast growing group of hospitals where patient related applications are also being implemented along with Oracle Financials. We are implementing GL, AP, AR, FA, CE, PO and INV modules. All the patient related information as well as billing and charging to patients is being maintained in the front-end hospital information system (HIS) and we have to integrate the inventory as well as Receivables part of information being generated from that system. I will explain some of the major activities that we have to cover in inventory.

Inventory:

All the warehouses are being maintained in oracle inventory, whereas all the areas where charging to patients is being done are maintained in the HIS. All the departments and areas raise their requisitions in the HIS system, which will have to be imported in Oracle Purchasing as Internal Requisitions. We are maintaining the structure of inventory as maintained in the HIS system so that we can synchronize the movement as well as match item cost, which will help us prepare the financial reports from Oracle.

Purchase requisitions as well as Internal transfer requests will be imported in Oracle, where purchasing activity will be handled. Once purchased, the items will be received in Oracle Inventory main store. The items would then be transferred from the main warehouse to the area stores and departments. Based on the internal requests we had suggested to the client to use order management module so that system enabled processes could be used and documentation could be generated.

My question is,

1.. In order to monitor the item cost from one store to the other as well as transfer the item from store to store do we require order management module for that?
2.. In the absence of Order management what solution could be available if order management module is not used? We feel that in the absence of order management all the automation will be lost and transfers and issues would be at the discretion of the users. Further, a manual code of conduct would have to be designed which would replace the workflow of Order Management.
3.. Is there a way by which inventory movement could be updated into in the oracle inventory?

What is your recommendation on the subject? Is there any other solution?